A high SNR provides an image with:

A high SNR provides an image with:

• A. Poor spatial resolution
• B. Higher spatial resolution
• C. Poor contrast
• D. Higher distortion

Answer: (B)

High signal-to-noise ratio means the signal dominates over random noise, so fine details stand out more clearly. With less noise crowding the image, small structures and edges are easier to distinguish, which translates into higher spatial resolution. In other words, a strong signal lets you resolve finer features that would be blurred by noise. The other outcomes—poor spatial resolution, poor contrast, or distortion—come from factors other than noise level; high SNR specifically enhances the clarity of detail and edge definition, not geometric accuracy or inherent contrast limits.

High signal-to-noise ratio means the signal dominates over random noise, so fine details stand out more clearly. With less noise crowding the image, small structures and edges are easier to distinguish, which translates into higher spatial resolution. In other words, a strong signal lets you resolve finer features that would be blurred by noise. The other outcomes—poor spatial resolution, poor contrast, or distortion—come from factors other than noise level; high SNR specifically enhances the clarity of detail and edge definition, not geometric accuracy or inherent contrast limits.